Synonyms of temperamental

temperamental

adjective

ˌtem-p(ə-)rə-ˈmen-tᵊl 

1

as in moody

frequently influenced by moods and especially bad moods

one of those temperamental actresses who can make life difficult for everyone around her

Synonyms & Similar Words

• moody
• volatile
• impulsive
• unstable
• changeful
• irritable
• mercurial
• uncertain
• variable
• unsettled
• capricious
• fickle
• whimsical
• mutable
• freakish
• changeable
• inconstant
• fluctuating
• sulky
• irascible
• petulant
• peevish
• pouty
• testy
• snappish
• unsteady
• crotchety
• fluid
• grouchy
• choleric
• waspish
• grumpy
• short-tempered
• crabby
• cross
• quick-tempered
• cranky
• snippy
• snippety

Antonyms & Near Antonyms

• even
• inflexible
• immutable
• invariable
• constant
• equable
• stable
• unchangeable
• steady
• unalterable
• unchanging
• settled
• changeless

2

as in volatile

likely to change frequently, suddenly, or unexpectedly

stock prices have been pretty temperamental lately, often fluctuating wildly

Synonyms & Similar Words

• volatile
• unpredictable
• unstable
• inconsistent
• mercurial
• changeful
• variable
• capricious
• fickle
• uncertain
• unsettled
• changeable
• mutable
• inconstant
• erratic
• fluctuating
• skittish
• unreliable
• unsteady
• fluid
• up in the air
• random
• flickery
• haphazard
• scattered
• shaky
• ambivalent
• arbitrary
• stray
• aimless
• undependable
• hit-or-miss
• untrustworthy
• desultory
• slapdash
• dicey
• protean
• versatile
• adaptable
• wavering
• irregular
• vacillating
• mobile
• shilly-shallying
• hesitating
• shilly-shally

Antonyms & Near Antonyms

• certain
• constant
• stable
• predictable
• steady
• stationary
• immutable
• invariable
• unchanging
• unchangeable
• settled
• uniform
• persistent
• even
• permanent
• unvarying
• durable
• reliable
• lasting
• equable
• dependable
• changeless
• abiding
• true
• trustworthy
• sure
• trusty
• tried
• tried-and-true

Example Sentences

Recent Examples of temperamental

Your 3rd House of Communication is stirred by the temperamental Moon, while the life-giving Sun boosts your 7th House of Partnership, aligning words with steady commitments. — Tarot.com, Baltimore Sun, 5 July 2026

All the while, the solar panel sat off to one side against the car, topping up the power in dribs and drabs as the temperamental Melbourne weather allowed. — Mike McRae 04, New Atlas, 5 July 2026

But the temperamental Lanza dropped out after recording his songs, and British actor Edmund Purdom acted his role and mouthed the songs. — ABC News, 26 June 2026

The machine's temperamental nature began to bother her. — Sarah Lyon, The Spruce, 24 June 2026